David, there's a good article about time clauses at
English Adverb Clauses - How to Use Adverb Clauses- Grammar for English ESL TEFL EFL ESOL. Would that help you understand?
And you're mixing up two different things here. Vthanhtrung's first question was why there is no future tense in adverbial clauses of time, his second post was responding to your request to give an example of an adverbial clause in the present or past tense. He gave you examples of the present tense.